Recently tried the latest MATE version on my Lenovo Thinkpad T400. It is OK but there seems to be a bug (perhaps already solved) in the 18.xx series with wireless and ethernet icons in the panel. I would suspend the laptop and then come back to the desktop and an ethernet icon would appear in the panel instead of a wireless icon, even though I was connected with wireless. Has anyone else had this problem?

IMO sleep, suspend, hibernate, are all a good source of problems on any OS.
internet is full of pages like "windows 7 won't wake up".
The first thing I do on any computer is disable all that crap.
How long does it take to boot your t400, like 50-60 seconds ?
Barely enough time to dust off the keyboard.